The Synthesis DH11 27.5 Pair Shimano by Crankbrothers is the first tuned carbon wheel system designed specifically for downhill mountain biking. This pair of front and rear wheels are optimized to meet the performance requirements and loads of mountain biking.The front wheel is compliant tuned to improve handling, maximizing grip and control in turns. The rear wheel is stiff tuned to support peak loads, enhancing stability and tracking at high speeds.Key Specs:- Engagement: 2.5° quiet engagement / magnetic pawls- ETRTO: 585mm (27.5), 622mm (29)- Hub: Project 321- Inner Rim Width: Front 31.5mm, Rear 31.5mm- Outer Rim Width: Front 38.7mm, Rear 39.5mm- Rim Height: 18.75mm- Spoke Count: Front 28, Rear 32- Spoke Type: Sapim CX-Ray (front), CX-Sprint (Rear)- Warranty: Lifetime (rim only)- Weight: 1945g per set (27.5), 1995g per set (29)These high-quality carbon wheels are built to last, with a lifetime warranty on the rim. They are lightweight, making them ideal for downhill riding. Upgrade your mountain bike with the Synthesis DH11 27.5 Pair Shimano by Crankbrothers.